java session timeout

1Setting session timeout globaly. It can be done by implementing ServletContextListener
2@Override
3public void contextInitialized(ServletContextEvent servletContextEvent) {      
4    servletContextEvent.getServletContext().setSessionTimeout(timeinminutes);
5}
6
7For specific User we can get the session from Request (HttpServletRequest) 
8e.g request.getSession().setMaxInactiveInterval(timeinsecond);